Safety device for power-operated machines.



E. B. STONE.

SAFETY DEVICE FOR POWER OPERATED MAGHINES.

APPLICATION FILED APR. 30, 1913.

1, 1 1 1,042. Patented Sept. 22, 19m.

- 2 SHEBTF$SHBET 1.

lV/TNESSES: LVVENTOR.

Ma /aw i Ohm 9717 b e 3 ,ORNEY.

' E. B. STONE.

SAFETY DEVICE FOR POWER OPERATED MAGHINES.

APPLIOATION FILED APR.30, 1913.

1, 1 1 1,042. E Patented Sept. 22, 1914.

2 SHEETS-SHEET 2.

IVITNESSES: LVVENTOR.

[TOR/V15)".

. f BTEUITA CONNECTICUT, CUEPORATIQN 91E IDE IU'E FUR PlT Ji EPI-DPEI WD MELCHINES.

. If l Specification or: butters rat-exit. Pgmbmyl q fl Slept-j, p2,, 1e14,

Application filedApril 30, 2913 Serial No. 764,592.

lever is pivotally mounted in a oacket 13 $5 ll, ciroun a secured to the side of the frame said lever I 7 v H u ad re ident having; a foot M- connec'l'ed by a rod 1:) uuth coui'ity of Hart ord a pedal 16 pivotally mounted in convenient i .n'vented a position for access by the foot of the opernew and lznoroi el 6G Ups. chines, oh the iollou d y invention contemplates a structure is e. spccif on. chat shall preseutlittle, if any, inco Yenience lily in'ven'tio" "elates to the class devices fio the operative performing the operations piei1t the operation of marequired, the deyice being so made that the eth c p the operative I luluds of the operative free and unobposifiiol s, and an object of my st 'ucted. ln el'l'eclimg; such a result I provide on, among others, is to prori a doa dog 17 that shall he placed in the path of co oi this class that while elllectuiily permovement of the foot llof the lever 12 union the functions required of it shall whenever the hands of the operative are in J sensitive to the inorcinentsiil the operdangerous positions and liable to injury by 70 to present sul'istantlaily no obstacle the movement, of the plunger 9. In the form to the YHGVBZIOGE or the hands arms in of? mechanism her in shown this dog constithe operation of the i'i'iachine, g tutcs the end oi. a sliding bar 18 mounted, as

i so due :lorzn of device embodying my invenl to and in the construction and use of c the object herein above set out, as Well other end being pivotally attached to a dog may be attained, is illustrated in (up-crating arm :20 secured to a dog operating l swings, in. shiclushaft 21 mounted in. a supporting frame resa e View l or press movahly attached to the machine frame. In

reattached I order that this supporting; frame may he nnerol operadaptcd to various conditions a. hracke elevation of? having; a supporting clamp socket- 23 is rig Jed safety deidly fixed on the machine frame, and a 's; r' 'aildiaframe support 24- is adjustahly secured in this socket, this construction enabling the 8 support to he rotataloly or longitudinally ads end, to slide in a dog support 19 sert. justed. 'lhe end of this support is preferratus ably flattened and. received in a slot 1n a owing a cross bar 25 of a supporting; frame ehm; also the tie includes two end bars .26 in which the dog operating shaft 21 is rotatably supported. El dog operating bar or safety member 27 is mounted upon the shaft 21 so that it may more freely toward and from it but at'the l maul poin er esses and lure structures same time so that my other movement of 5 re selected such a machine for the purthe bar will impart rotary movement to said p 'llust ating my invention herein. In shaft. 'l othis end the/bar 27 is suspended such the numeral 5 indicates legs, "ruin the dog operating shaft by slotted arms 45 the the driving shaft, 8 the driv- 29 Within the slots in which the shaft is rein "he plunger, lUthe uleor work ceived, and one of said arms also receives a 10 perloi einlier, and ll the bed of z crank formed at one end of theshaft. pov'c ll of which parts may be of The bar 27 is preferably constructed of ordi zaly and Well known construction and 59 yhich include a clutch member operaiied by a clutch or starting lever 12 to connect the pulley with the shaft 7 to rotate the latter in anycoininon and Well known manner. in the form of device herein shown this clutch hainhoo or other light material, and is adapted to rest against or be located i111- uiediatcly in front of or over the arms of 10 the ope'utive, and it will be seen that this mounting of the her or safety nienil e and its construction "all cause it to readily rel 1 l l l l l l 'l 1 to filTe side of the machine frame, the 75,

spond to the movements of the operators arms in various directions with substantially no ol'istruction to such movement. The mounting of the frame is such that the bar may be readily adjusted to suit different or varying conditions and to place it in such positions as to cause its operation, whenever the hands of the operator are placed in dangerous positions with respect to the dies, to move the dog 17 into the path of movement of the foot 14 of the lever 12, and it will thus be impossible, whenever the operators hands are in such dangerous positions, to operate the clutch parts to start the running of the machine. The construction and adoption of the device is such thatit is always in position to serve the purpose for which it is intended, requiring no act on the part of the operative to place it in readiness to serve such purpose.

An important feature of my invention resides in the bar or safety 'nember necessarily actuated by the person of the operator in manipulating the work, the term person as employed herein having its regular meaning, denoting the body or any member there of, as the arms, legs, hands, feet, or the like.

A distinctive feature of my invention resides in the safety device that is an active agent and that is arranged to be directly moved by the operator before the treadle, clutch rod &c., for manually controlling the operations of the machine, can be operated. In other words, the safety device is initially or primarily moved for the purpose of releasing the treadle to permit its operation.

The mechanism herein illustrated and de scribed for carrying out my idea is only one of the several forms contemplated by me to effect this result, and I do not therefore limit my invention to the exact construction herein set forth.

I claim- 1. In combination with the work per forming member of a machine, manually actuated means for controlling the operationsof said member, a support, a safety member movably mounted on the support and located in position to be necessarily engaged and moved by the person of the operator in manipulating thowork, and means connected with said safety member to control the operation of vsaid manually actuated controlling, means.

Q. In combination with the driving member of a machine, manually actuated means for controlling the operations of said member, a support, a safety n'icmber movably mounted on the support in position to be necessarily engaged and moved by the person of the operator in manipulating the work, and means connected with said safety member to control the operation of said manually actuated controlling means.

3. In, combination with the work performmg member of a machine, manually actuated means for controlling the operations of said member, a lock to prevent operation of said manually actuated means, a support, a safety member movably mounted on the support in position to be necessarily engaged by the person of the operator in manipulating the work, and a connection between said safety member and said lock to operate the latter.

4:. In combination with the work performing member of a machine and the means for operating said member, means for preventing its operation, a support, a safety member mounted upon thesupport in position to be necessarily engaged and moved by the person of the operator in manipulating the work, and means connected with said safety member and operated thereby to control the operation of the means for preventing operation of said member.

In combination with the work performing member of a machine, means for driving said member, means for connecting said driving means with and for disconnecting it from said work performing member,manually actuated means for controlling the operations of said connecting and disconnecting means, a lock for said controllin means, and means connected with said lock to operate it and located in position to be necessarily engaged by the person of the operator in the regular operation of manipulating the work.

(3. In a safety device, in combination with the work performing member of a machine, manually actuated means for controlling the operations of said member, a safety member movably supported by the frame of the machine in position to be necessarilyengaged and moved by the person of the operator .in manipulating the work, and means connected with said safety member to control the operation of said manually actuated controlling means.

T. In combination with the work performing member of a machine, manually actuated .neansfor controlling the operations of said member,aclock to prevent the operation of said manually actuated controlling means, a support, and a safety member mountcdto swing freely on said su port in position to be necessarily engaged by the person of the operator in manipulating the work, said safety member being connected to said lock to operate it.

8. In combination with, the work performing member of a machine, a driving member therefor, means connecting said driving member with and for disconnecting it from said work performing member, a support, a safety member movably mounted on the support in position to be necessarily engaged and moved by the person of the operator in manipulatin the, work, and means gaged and moved by connecting said safety member with said connecting and disconnecting means.

9. In combination with the Work perform ing member of a machine, means for intermittently driving said member, a support, a safety member movably mounted on the support in position to be necessarily engaged and moved by the person of the operator in manipulating the work, and connections between said intermittent driving means and said safety member to control the operations of the former by the latter. 4

10. I forming member of a machine, manually actuated means for controlling the operations of said member, a lock to prevent operation of said manually actuated controlling means, a support, a rock shaft mounted on the support, a safety device suspended from said rock shaft in position to be necessafily engaged by the person of the operator in manipulating the work, and a connection between said safety member and lock for operation of the latter.

11. In combination with the Work performing member of a machine, means for intermittently driving said member, means for controlling the operations of the latter, a support, a safety member mounted on said support in position to be necessarily enthe person of the operator in manipulating the Work, and an actuating connection between said safety member and the means for contrblling the operations of. said means.

12. In a safety device, in combination with means for intermittently driving a machine, means to control said intermittent driving means, a safety 'device supported in position to be necessarily engaged and moved by the person of the operator in manipulating the work, and operative connections between said safety intermittent driving n combination with the Work per-- for preventing its operation,

the operations of device and the means for intermittently controlling the operations of said driving means.

13. A safety device including a member between said controlling means and the member for preventing operation of the machine to cause operation of the former by the latter.

1 In combination with the Work .performing member of a machine and the means for operating said member, means controlling means supported in position to be necessarily engaged and moved by the person of the operator in manipulating the work, and operative connections between said controlling means and the means for preventing operations of said member.

15. In combination with the work performing member of a machine and the means for operating it, a safety member located in position to be necessarily engaged by the person of the operator in manipulating the Work, and connections between said safety member and said operating means for control of the latter by the former.

.16. In combination with the work performing" member of a machine, manually operated means for controlling operations of said member, a safety member supported independently and normally adapted to engage the person of the operator and be moved thereby in feeding blanks to the ma chine, and means to pause the safety member to control the action of said manually operated controlling means.

. ELMER B. STONE. Witnesses:

ARTHUR B. JENKINS, EUNICE F. EATON. 

